add Close docstring
add Close docstring

MrStrong/Sia,mnsl/Sia,ChrisSchinnerl/Sia,mtlynch/Sia,NebulousLabs/Sia,mharkus/Sia,NebulousLabs/Sia,MrStrong/Sia,ericflo/Sia,rivine/rivine,rivine/rivine,mnsl/Sia,mtlynch/Sia,ChrisSchinnerl/Sia,johnathanhowell/Sia,ericflo/Sia,mharkus/Sia,Mingling94/Sia